Right click on the top-level folder in the left panel and choose: Open contents table. Select your Outlook mail profile or simply press OK if you are not familiar with this dialog.ĭouble click on the line which has the value for the Default Store column set to True. Press OK on the first screen which displays some usage notes.Extract the downloaded file and run mfcmapi.exe from within the extracted folder.When you use a 64-bit version of Outlook, you’ll need the file starting with.When you use a 32-bit version of Outlook, you’ll need the file starting with.Visit the MFCMAPI page on GitHub to download the latest version of MFCMAPI.However, make sure you follow the instructions below very closely to prevent making any irreparable mistakes.

MFCMAPI is actually a tool for Outlook MAPI developers but as it provides “low-level” access to Outlook’s data stores, it is also a handy tool for some advanced troubleshooting. Deleting Read Receipts via MFCMAPI (recommended)īefore doing anything, make sure you have a current backup of your mailbox (just in case).You can still do this via one of the following advanced (free) support tools from Microsoft: MFCMAPI or MDBVU32. Seeing messages being sent or are you getting sending errors without something in the Outbox?Īs they are invisible in your Outbox, it is kinda tricky to delete them.

Outlook read receipt